Additional thought. If the problem is an incoming signal you will need to be stronger than it to get thru to the repeater (capture effect) to control it. Make sure you have the timeout timer set to protect the transmitter.

You really need to use a UHF frequency to control the repeater. Control via the input frequency was never legal under FCC regulations.

Pete

It has been for some time now; as long as you can use AUX freqs. The prohibition of using the input freq was deleted from Part 97...Also AUX control (remote control) is legal on the 2m repeater subbands so you can control op a 2m rptr on its input.....but controlling a 10 or 6m rptr on its input is still not legal....